Duplicating machine



J. J. FLANIGAN DUPLICATING MACHINE Oct. 9, 1928.

Original Filed April 6, 1925 Patented Oct. 9, 1928.

UNITED STA TES PATENT OFFICE.

JOHN J'. FLANIGAN, OF CHICAGO, ILLINOIS.

DUPLICATING MACHINE.

This application is a division of my cop'ending application Serial No.20,890 filed April 6, 1925.

The invention relates to a hectograph duplicating machine of the type"in which a gelatin band is stretched over a bed plate.

When it is desired to make copies from a letter or the like this letteris brought into con tact with the gelatin band, which has been moistenedand a platen is moved over the letter, thus leaving an impression uponthe band. This impression may then be transferred to sheets of blankpaper by placing the same on the band in the position formerly occupiedby the letter and again moving the platen over the paper and band. In myaforesald co-pending application I have described and claimed a conveyorupon which rolls of gelatin band may be mounted and brought successivelyinto position at one end of the bed plate where the band may be unrolledtherefrom, stretched over the bed plate and secured to a reel at theother end of the bed plate.

One of the principal objects of the present invention is to provide anovel and improved spindle upon which a roll of gelatin band may bemounted and which when securedto the conveyor will be incapable ofremoval therefrom without destroying either the spindle or the conveyor,whereby unauthorized persons will be prevented from removing thespindle.

A further obj eat. of my invention is to rovide a spindle of novel andimproved orm together with means for fastening the same to the conveyorin such a, manner that it cannot be removed therefrom withoutdestruction of the spindle together with means for permanently fasteningthe gelatin band thereto so that the band cannot be removed from thespindle without breaking either it or the spindle or some part. of themechanism.

Still another object is to provide a gelatin band permanently secured toa spindle and having its outer end provided with a clip adapted toengage the reel referred to above so that the band may be unwound fromits spindle and wound upon the reel.

In the accompanying drawings in which I have shown a selected embodimentof my invention; I

Fig. 1 is a longitudinal sectional view of one form of my novel spindle.

j Fig. 2 is a vertical sectionalview on the line 22 of Fig.1.

application filed November 30,

Fig. 3 is a horizontal sectional view on the line 3-3 of Fig. 1. I

Fig. 4 is a vertical sectional view on the line 4-4 of Fig. 3. 0 v

Fig. 5 vis a vertical sectional view on the line 5-5 of Fig. 1. I

Fig. 61s a fragmentary view of the en of a gelatin band showing themeans by which it may be attached to the reel, shown in Fig. 7.

Fig. 7 is a transverse sectional view of a me A gelatin band 3 isattached at one end to a spindle and at its other end it is providedwith a clip 16 adapted to engage a hook 17 on a receiving reel 9. Thehook is struck from the tubular sheet metal receiving reel 9 and is bentwithin the reel and has its free end bent outward and upon itself, thehook lying wholly within the reel. The spindle is designed to bepermanently attached to the chains of a conveyor so that it may not beremoved by unauthorized persons except by such mutilation as will renderit unfit for use. The spindle is provided with ournals 32 and. 33 whichare adapted to be supported in suit; able bearings in the chains forminga corn veyor.

This spindle further consists ofa tubular sheet metal cylinder 34secured at one end to a hub 35, provided with a rectangular shapedrecess 36 receiving-a'similarly shaped part3? of the journal 33. Theparts are fastened together as by a bolt 38.

The other end of the tubular member 34 is secured as by crimping at 39.to a hub 40, said hub having a central bore 41 therein. This borereceives a stem 42 of the journal 32 and this stem is preferablyprovided with an annular groove 43 adj acent its end, the end beingpointed, as shown at 44. Pivoted on the hub 40 at its end is a pawl 45urged towards the center of the hub by the spring 46. When the stem 42is inserted in the bore 41 its pointed end-will force the pawl to oneside and the pawl will then snap back into the groove 43. It will thusbe seen that the spindle cannot be removed from the conveyor as thefastening means comprising the pawl 45 is completely enclosed within thebody of the spindie. The disk 28, which forms a rigid part .ofthejournal 32 is provided with means impossible.

secured to the chains forming the conveyor, it will be seen that thespindle cannot be removed from the conveyor without destroying vsomevital part of the mechanism. The tubular member 34 is provided with oneor more openings49 adjacent the end having the hub 40 so that a suitabletool may be inserted therein to cut around the tubular member and thuspermit its removal, but it will be seen it is necessary to destroy thespindle in order to effect its removal. The hub 40 is provided with asuitable stop 50 to limit. movement of the pawl beyond a point where itmay be readily pushed aside by the point 44 of the stem 42. I

A groove 61 is provided in the tubular member 34, in which the end ofthe band may be inserted and secured in place 'by a wire 62, as plainlyshown in Fig. 9. This wire is of a length such that it will becompletely covered by the gelatin band when rolled upon the spindle andtherefore it is impossible to remove the same without sliding the bandlengthwise out of the groove 61, and this is Movement of the wire in onedirection is blocked by the disk 28 and in the other it may beeffectively prevented by tightly crimping together the sides of thegroove I am aware that changes in the form, construction and arrangemehtof parts may be made without departing from the spirit and ,withoutsacrificing the advantages of the inventionv and I consider myselfentitled to make all such changes as fairly fall within the scope of thefollowing claims.

I claim 1. A spindle for a gelatin band comprising a tubular member, ahub permanently secured in one end thereof, a pawl pivoted on the ingner end of said hub and spring pressed towards the center thereof, saidhub having a bore therethrough, a journal having a stem inserted in saidbore, said stem provided with a groove to receive said pawl. j

2. A spindle for a gelatin band comprising a tubular member, a hubpermanently secured in one end thereof and havin a central bore therein,a pawl pivoted on t v e inner end of said hub, means yieldingly, urgingsaid pawl towards said bore, means limiting the movement of said pawltowards said bore, a

. journal having a stem provided with a groove adjacent the end thereof,said pawl snapping into said groove when said stem is inserted in saidbore.

3. A spindle for a gelatin band comprising a tubular member, a hubpermanently secured in one end of said member andhaving a longitudinalbore, a journal for the spindle and provided with a stem adapted to beinserted in said bore, and means for detachably securing said spindle tosaid hub.

4. A spindle for a gelatin band comprising a tubular member, a hubpermanently secured in one end of said member and having a longitudinalbore, a journal for the spindle having a stem adapted to be inserted insaid bore, and means on the hub for detachably securing the spindle tothe hub.

5. A spindle for a gelatin band comprising a tubular member, a hubsecured in one end of said member and having a bore extendinglongitudinally theretlirou gh, a journal for the spindle outside of themember .and having a stem projecting through said bore into said member,and means beyond the end of the hub and within the member engaging saidstem for permanently securing the journal to the member.

6. A spindle for a gelatin band comprising a tubular member, a hubsecured in one end the spindle outside of the member and having a stemprojecting through-said bore into said member, and spring control meansbeyond the end of the hub and within the member engaging said stern forpermanently securing the journal to the member.

7. A spindle for a gelatin band comprising a'tubular member, a hubsecured in one end of said member and having a bore extendinglongitudinally therethrough, a journal for the spindle outside of themember and having a stem projecting through said bore. and beond the hubinto said member, said stem havin a groove between the inner end of thehu and the inner end of the stem, and means within the member engagingsaid groove for permanently securing the journal to the mem- 8. Aspindle for a gelatin band comprising a tubular member, a hub secured inone end of said member and having a bore extending longitudinallytherethrough, a journal for the spindle outside of the member and havinga stem "projecting through said bore and be yond the hub into saidmember, and yielding means within the member arranged within the ath ofthe stem as it is projected through the re to engage the stem forpermanently securing the journal to the member, said stem having apointed inner end to pass said means.

9. A spindle for a gelatin band comprising atubular member, a hubsecured in one end ofsaid member and having a bore extendinglongitudinally therethrough, a journal for the spindle outside of themember and having a stem projecting through said bore and beyond the hubinto said member, and means on the inner end of the hub for engaging thestem to permanently secure the journal to the member.

10. A spindle for a gelatin band comprising a tubular member, a hubsecured in one end of said member and having a bore extendinglongitudinally therethrough, a journal for the spindle outside of themember and having a stem projecting through said bore and beyond the hubinto said member, said stem having a groove between the-inner end of thehub and the inner end of the stem, and a spring pressed pawl mounted onthe inner end of the hub .and arranged to engage said groove forpermanently securing the journal to the member.

11. A spindle for a gelatin band comprising a tubular member, a hubsecured in one end of said member and having a bore extendinglongitudinally therethrough, a journal for the spindle outside of themember and having a stem projecting through said bore and beyond the hubinto said member, said stem having a groove between the inner end of thehub and the inner end of the stem, and a spring pressed pawl mounted onthe hub to engage said groove for permanently securing the journal tothe member, the inner end'of the stem being pointed to pass the pawlwhen the stem is inserted in the hub and member.

12. A spindle for a gelatin band comprising a tubular member, a hubsecured in one end of said member and having a bore extendinglongitudinally therethrough, a journal for the spindle outside of themember and having a stem projecting through said bore and beyond the hubinto said member, means for permanently securing the journal to themember, said hub having a recess at its outer end, and a disk rigid withthe journal and permanently secured therewith to the member and having aprojection engaged with said recess whereby the disk and spindle willrotate in unison.

13. A spindle for a gelatin band comprising a tubular sheet metalmember, a hub secured in one end of said tubular member and providedwith a groove, and,a journal permanently secured in said hub, saidtubular member having an opening opposite said groove in the hub topermit the insertion of a tool for cutting the tubular member andseparating it from the journal.

14. A reel for a gelatin band comprising a tubular sheet metal memberhaving a hook struck therefrom and bent within the member,

said hook having its free end bent outward and upon itself, but lyingwholly within the member.

JOHN J. FLANIGAN.

